Lock



E. J. BAUME Oct. 4, 1932.

LOCK

Filed Feb. 9. 1931 2 Sheets-Sheet 1 F 1E1. l

w -m A M @M QW ATTO N EYS LOCK Filed Feb. 9, 1931 2 Sheets-Sheet 2 IIIATTORNEYS latable knobs,

Patented 10a. 4, '1932 UNITED STATES,

PATENT OFFICE Application filed February 9, 1881. Serial No. 514,587.

Thisinvention relates to a door latch and lock, and pertains to astructure having a latch operable from an oscillatable knob shaft. 3

The objects of thisinvention are to provide a latch structure having anyor all of the following features: two independently oscila latchoperator actuable b oscillation of either knob, said stem holding theknob shaft assembled; means to lock said operator controllable foractuation through one knob and releasable from either knob and a latchstem and latch coupled together by a reversing movement.

These objects together with other objects and correspondinaccomplishments are obtained by means 0 the embodiment of the inventionillustrated in the accompanying drawings, in which Fig. 1 is alongitudinal section of the lock in a door with the latch protracted;Fig. 2 is a section as seen on the line 22 of Fig. 1; Fig. 3 is aperspective view of the knobs, shanks and latch operator parts inposition to beassembled; Figs. 4 and 5 are sections as seen on linescorrespondingly numbered in Fig. 2; Fig. 6 is a section similar to Fig.2 showing the o erator with the latch retracted.

Re erring 'with more particularity to thedrawings, A denotes an insideknob and B an outside knob, both having knob shanks which when assembledconstitute a knob shaft. The latch operator assembly is marked 0. Theknob and latch operator assembly is mounted in a door D, and the latchkeeper in a door frame E. As assembled, the door is provided with atransverse bore 7 and an intersecting bore 8 extending from the doorjainb. The bores may be round and drilled by augers. In the door frame Eand in alinement with bore 8, when the door is closed, is a recess 9covered by a keeper plate 10 to receive the latch. vThe knob shaft ismounted in bore 7 and the operator assembly in bore 8.

Mounted in bore 7 is a tubular casing 11, cut away at the mid sectionmetrically opposite openings for accommodation of the set-back or guidecasing. Casing 11 is internally threaded atopposite ends to providedia-. I

a set-back casing 14 having diametrically opy posite openings adjacentthe inner end of the shell to aline with the bore of casing 11 and toreceive the knob shanks. Casing 14 has a flange at its outer end, theflange being rectangular to provide a plate 15.

A guide shell 16 fits telescopically within the setback casing 14 andhas a plate 17 corresponding to plate 15. The inner'end of shell 16 hasa wall 18 to serve as seats for springs. The selvage plate 19corresponding to plates 15 and 17 is countersunk in the edge of thedoor, the plates having registering openings for attachment of the partsby means of screws 20. The selvage plate has an opening alining with thebore of shell 16 to accommodate a latch bolt 21 and to hold the latteragainst displacement. The latch bolt has a collar 22 slidingly fittingwithin the bore of shell 16. The pins 23 extend rearwardly from the bolt21 and are guided in openings formed in wall 18. Compression springs 24embrace pins 23 and tend to hold the latch bolt in its protractedposition. Extending through the rear wall of the guide shell are wallsforming a guideway 26. The outer end of the guide chamber has pivotallymounted therein a rocker 27. The rocker 27 has spaced segments 27ajoined by a bridle 27 b which underhangs yoke 25. A bridge.

27c joining the segments 27a serves as a contact for a finger 29 on alatch stem 28. By rocking the bridge 270 forwardly, the latch bolt w1llbe retracted against the springs 24, as illustrated in Fig. 6. The latchstem exand 126 having outtends into the tubular casing 11. It has anelongated slot 30 with a tooth 31 in its forward wall. Obviously, thesprings 24 tend to maintain the latch in protracted position and thelatch stem in retracted position. The

rocker forms a reversing coupling between the latch stem and latch bolt.

The knob shaft comprises shanks 32 and 33 nested within one another,and, when in plicity of disclosure,

.cal bores 34 and 35 at their kno assembled relation, the shanks 32 forman outer shell completely covering the nested portion of shank 33. Theshanks embracing the knob are journalled in the rosettes 12a 12b. Theshanks are provided with c lindgian s. Shank33 has an enlarged bore 36forming a continuation of bore 35 and at an intermediate portion is abridge 37 having an elonated slot to slidably receive the head 38 of alock dog 39. A collar is formed on the pin end of lock dog 39 and servesas a seat for spring 40 tending to hold the lock dog with its head outof the latch operator stem slot 30 and with the end of the lock dogprojected beyond the knob A. The head of the lock dog is provided with arecess 41 corresponding to the tooth 31 with which it is designed tocoact. A cut-out 42 is provided in shank 32 and a cut-out 43 in shank33, these cut-outs registeringiwhen the shanks are assembled and therear walls of the cut-outs serving as rollouts to engage the head of thelatch stem operator so that by oscillating either knob in eitherdirection, the latch stem will be pushed into protracted position. Inthe position of the parts shown in Fig. 1, the lock dog is retractedfrom the slot 30. However, if the lock do is projected into the slot 30,knob B cannot e oscillated, but knob A can be oscillated, and will causethe roll-out 42 to ush the latch operator stem and thereby re ease' thedog, the spring is a plug 44 having a roll-out 45 engaging the head oflatch operator stem 28 and capable of pushin the latch operator steinoutwardly so as to release the dog head 38. The plug 44 is provided witha stem 46 pivotally mounted in the bore 35 and shown with an end havin akerf 47 for engagement with a screw driver or the like so that the plugmay be rotated. It is obvious, that any suitable type of lock might beinstalled in the knobB and connected to the stem 35 so as to be operatedby a key. However, for the purpose of simsuch a lock has not been shown.If it is desired to lock the door, stem 39 is pushed inwardly at theknob A, thereby causing the dog to enter slot 30 and the'toot-h 31 andrecess'41 will act as a detent to yieldand the latter will be retractedby ablyhold the dog in its locking position.

- Thus,

a lock is provided. This lock may be released by oscillating knob A, butcannot be released by oscillating knob B. However, the lock may releasedby oscillating stem 46 from the outside. 9 In the installation of thelock, the door D is bored transversely, as indicated by 7, the borebeing located at substantially the correct distance from the edge of thedoor. The bore 8 is then drilled from the edge so that it intersects andextends through the bore 6. The opening 8 is then countersunk at thedoor and the 40. Disposed within thebore 36 r bore 8, the knob shanksbeing inserted from opposite sides, the do being in place. The guideshell assemble with the latch bolt parts is then placed within theset-back shell head of the latch bolt operator 10 disposed within thecut-outs on the knob shank. The selvage plate 19 is then placed inposition and the parts secured in the door by means of the screws 20.The latch bolt stem holds the knobs in assembled relation in the door.The latch bolt 21 may be projected by oscillating either knob A or knobB. To lock the latch, the dog stem 39 is pressed inwardly and willengage the head of the latch bolt stem, snapping into position.-However, oscillation of knob A will release the dog, but knob B cannotbe turned on the outside. To release the latch stem from the outside,the stem 46 of the roll-out plug is turned. Obviousl I have provided aneasil assembled and isassembled structure, w ich is compact andeconomical to manufacture. No marring or mutilation of the door isnecessary for the installation of the lock.

. What I claim is 1. A door latch comprising a divided oscillatable knobshaft having independently turnable shanks nested within one anotherwith door knobs on the shanks, said shanks having registerable cut-outsin their walls and a roll-out, a latch operator stem mounted to bereciprocable to and from said knob shaft andoperable by said roll-out,said operator stem having a head extending into said cutouts and lockingsaid shanks in assembled relation, resilient means yieldably holdingsaid stem with its head in said cut-outs, sai head having a keeper slotlocatedto be within said shanks when in retracted position, a

lock dog non-rotatable mounted in one of said shanks for axial movementand projectable into said slot to hold the shank against turning andthereby to hold. said stem against protraction, said lock dog beingmanually operable from a door knob.

2. A door latch comprising a divided oscillatable knob shaft. havingindependently 'turnable shanks nested within one another cillatable lmobshaft having independently turnable shanks nested within one anotherwith door knobs on the shanks, said shanks.

having registerable cut-outs in their walls and a roll-out, a latchoperator stem mounted t0 be reciprocable to and from said knob shaft andoperable b said roll-out, said operator stem having a ead extending intosaid cutouts and locking said shanks in assembled relation, resilientmeans yieldably holding a,

said stem with its head in said cut-outs, said head having a keeper slotlocated to be within said shanks when in retracted position, a lock dognon-rotatable mounted in one of said shanks for axial projection intosaid slot to hold the shank against turning and thereby to hold saidstem against protraction and having an inclined surface for coactionwith a wall of said slot to yieldably hold the dog within said head,resilient means tending to retract said dog from said slot and beingmanually operable from a door knob to project said dog into said slot.

4. A door latch comprising a divided oseillatable knob shaft havingindependently turnable shanks nested within one another with door knobson the shanks, said shanks having registerable cut-outs in their wallsand a roll-out, a latch operator stem mounted to be reciprocable to andfrom said knob shaft and operable by said roll-out, a guide casing forsaid stem having detachable means to hold said stem in assembledrelation with said shaft, said operator stem having a head extendinginto said cut-outs and locking said shanks in assembled relation,resilient means yieldably holding said stem with its head in saidcut-outs, said head having a keeper slot located to be within saidshanks when in retracted position, a lock dog non-rotatable mounted inone of said shanks for axial projection into said slot to hold the shankagainst turning and thereby to hold said stem against protraction andhaving an inclined surface for 'coaction with a wall of said slot toyieldably hold the dog within said head, resilient means tending toretract said dog from said slot and being manually operable from a doorknob to project said dog into said slot.

5. A door latch comprising a divided oscilturnable shanks nested withinone another having registerable cut-outs in' their walls and a roll-out,a latch operator stem mounted to be reciprocable to and from said knobshaft and operableby said roll-out, said operator stem having a headextending into said cutouts and locking said shanks in assembledrelation, resilient means yieldably holding said stem with its head insaid cut-outs, said head having a keeper slot located to be within saidshanks when in retracted position, a lock dog non-rotatable mounted inone of said shanks for axial projection into said slot to hold the shankagainst turning and thereby to hold said stem against protraction, saiddog and a wall of said slot having a cooperating tooth and recess forengagement to yield ably hold the dog within said head, a spring tendingto retract said dog from-said slot and being manually operable from adoor knob to project said dog into said slot.

6. A door latch comprising a divided oscillatable knob shaft havingindependently turnable shanks nested within one another with door knobson the shanks, said shanks having registerable cut-outs in their wallsand a roll-out, a latch operator stem mounted to be reciprocable to andfrom said knob shaft and operable by said roll-out, a guide casing forsaid stem having detachable means to hold said stem in assembledrelation with said shaft, said operator stem having a head extendinginto said cut-outs and locking said shanks in assembled relation,resilient means yieldably holding said stem with its head in saidcut-outs, said head havin a keeper slot located to be within said shankswhen in retracted position, a lock dog non-rotatable mounted in one ofsaid shanks for axial projection into said slot to hold the shankagainst turning and thereby to hold said stem against protraction, saiddog and a wall of said slot having a cooperating tooth and recess forengagement to yieldably hold the dog within said head, a spring tendingto retract said dog from said slot and being manually operable from adoor knob to project said dog into said slot. I

7. A door latch comprising a divided knob shaft having independentlyoscillatable shanks nested within one another with door knobs on theshanks, said shanks having registerable cut-outs in their wallsconstituting roll-outs, a latch operator stem mounted to be reciprocableto and from said knob shaft and operable by either of said roll-outs,said operator stem having a head extending into said cut-outs andlocking said shanks in assembled relation, a spring for holding saidstem with its head in said cut-outs and yieldably against said roll-outssaid head having a keeper slot located to be within said shanks when inretracted position, a lock dog mounted in said shanks for axial movementand extendingthrough' one knob for manual opwith door knobs on theshanks, said shanks eration and rotatable in the companion shank, saiddog being mounted in the other shank to be restrained therein againstrotation, said head being 'projectable into said slot to hold said stemagainst protraction and arranged to be restrained therein againstrotation, said dog having an inclined surface for coaction with a wallof said slot to yieldably hold the dog within said head, said shanksnested within one another with door' knobs on the shanks, Said shankshaving registerable cut-outs in their walls constituting roll-outs, alatch operator stem mounted to be reciprocable to and from said knobshaft and operable by either of said roll-outs, said operator stemhaving a head extending into said cut-outs locking said shanks inassembled relation, a guide casing for said stem extending transverse tosaid shaft, a spring in said guide casing for holding said stem with itshead in said cut-outs and yieldably against said roll-outs, said headhavin" a keeper slot located to be within aid shanks when in retractedposition, a lock-dog mounted in said shanks for axial movement andextending through one knob for manual operation and rotatable in thecompanion shank, said dog being mounted in the other shank to berestrained therein against rotation, said head being project-able intosaid slot to hold said stem against protraction and arranged to berestrained therein against rotation, said dog having an inclined surfacefor coaction with a wall of said slot to yieldably hold the dog withinsaid head, said spring urging said stem into holding position with saiddog, and resilient means tending to retract said dog from said slot,said dog being manually operable from a door knob to project said doginto said slot and said dog being releasable by oscillation of the knobthrough which it projects.

9. A door latch comprising a divided knob shaft having independentlyoscillatable shanks nested within one another with door knobs on theshanks, said shanks having registerable cut-outs in their wallsconstituting rolls-outs, a latch operator stem mounted to bereciprocable to and from said knob shaft and operable by either of saidroll-outs, said operator stem having a head extending into said cut-outsand locking said shanks in assembled relation, a spring for holding saidstem with its head in said cut-outs and yieldably against saidroll-outs, said head having a keeper slot, a lock dog mounted in saidshanks for axial movement and extending throu h one knob for manualoperation and rotatable in the companion shank, said dog being mountedin the other shank to be restrained therein against rotation, said headbeing projectable into said slotto hold said stem against protraetionand arranged to be restrained therein against rotation, said dog havingan inclined surface for coaction with a wall of said slot to yieldablyhold the dog within said head, said spring urging said stem into holdingposition wit said dog, 'resilient means tending to retract said dog fromsaid slot, said dog being manually operable from a door knob to rojectsaid dog into said slot and said dog being releasable by osci1lation ofthe knob through which it projects, and a roll-out member disposed insaid shaft in the shank opposite to said dog, said rollout memberbeingdisposed to protract said head and stem and being operable throughthe knob on said last mentioned shank.

10. A door latch comprising a divided knob shaft having independentlyoscillatable shanks nested within one another with door knobs on theshanks, said shanks having registerable cut-outs in their wallsconstituting roll-outs, a latch operator stem mounted to be reciprocableto and from said knob shaft and operable by either of said roll-outs,said operator stem havin a head extending into said cut-outs and ingsaid shanks in assembled relation, a guide casing for said stemextending transverse to said shaft, a spring in said guide casing forholding said stem with its head in said cut-outs and yieldably againstsaid roll-outs, said head having a keeper slot, a lock dog mounted insaid shanks for axial movement and extending through one knob for manualoperation and rotatable in the companion shank, said dog being mountedin theother shank to be restrained therein against rotation, said headbeing projectable into said slot to hold said stem against protractionand arranged to be restrained therein against rotation, said dog havingan inclined surface for coaction with a wall of said slot to yieldablyhold the dog within said head, said springl urging said stem intoholding position wit said dog, resilient means tending to retract saiddog from said slot, said dog being manually operable from a door knob toproject said dog into said slot and said dog being releasable byoscillation-0f the knob through which it project's, and a roll-outmember disposed in said shaft in the shank opposite to said dog, saidroll-out member being disposed to protract said head and stem and beingoperable through the knob on said last mentioned shank; I

11.v A door latch comprising a divided knob shaft having independentlyoscillatable shanks nested within one another with door knobs on theshanks, said shanks having registerable cut-outs in their wallsconstituting roll-outs, a latch operator stem mounted to be reciprocableto and from said knob shaft v disposed in said other shank and operableby either of said-roll-outs, said operator stem having a head extendinginto said cut-outs locking said shanks in assembled relation, a springfor holding said stem with its head in said cut-outs and yieldablyagainst said roll-outs, said head having an elongated keeper slot with aserration extending along its inner wall, a lock dog mounted in saidshanks for axial -movement and extending throu h one knob for manualoperation and rotate Is in the companion shank, said dog having atransversely elongated inner end mounted in a corresponding openingformed in the other shank and thereby restrained therein againstrotation and projectable into said slot to hold said stem againstprotraction, the inner end of said do having a recess for coaction withsaid serration to yieldably hold the dog withinsaid head, said springurging said stem into holding position with said dog, resilient meanstending to retract said dog from said slot, said dog being manuallyoperable from a door knob to project said dog into said slot and saiddog being releasable by oscillation of the knob through which itprojects, and an oscillatable roll-out and engageable with the head ofsaid stem to protract the latter, said last mentioned roll-out beingoperable through the door knob of said other shank whereby to releasesaid stem from said dog.

12. A door latch comprising a divided lmob shaft having a tubularcasing, independently oscillatable shanks nested within oneanother withdoor knobs on the shanks and pivotally mounted in said tubular casing,said shanks having registerable cut-outs in their walls constitutingroll-outs, a set-back guide casing extending through said tubularcasing, a latch operator stem mounted to be reciprocable in saidset-back casing to and from said knob shaft and operable by either ofsaid roll-outs, said operator stem having a head extending into saidcut-outs and locking said shanks in assembled relation, a spring in saidset-back casing for holding said stem with its head in said cut-outsroll-outs, said head having an elongated keeper slot with a serrationextending along its inner wall, a lock dog mounted in said shanks foraxial movement and extending through one knob for manual operation androtatable in the companion shank, said dog having a transverselyelongated inner end mounted in a corresponding opening formed in theother shank and thereby restrained thereinagainst rotationandprojectable into said slot to hold said stem against protraction, theinner end of said dog havinga recess for coaction with said serration toyieldably hold the dog within said head, said spring urging said stemoperator stem and yieldably against said 1 with door knobs on the shankslatch operator stem into holding position with said dog resilient meanstending to retract said dog from said slot said dog being releasable byoscillation of the knob through which it projects, and an oscillatableroll-out disposedv in said other shank and engageable with the head ofsaid stem to protract the latter, said last mentioned, roll-out having astempivotally mounted in said other shank and operable throu h where yto release said stem from said dog.

the 'door knob of said other shank 13. A door latch comprising a dividedknob shaft having independently oscillatable shanks nested within oneanother with door knobs on the shanks, said shanks having registerablecut-outs in their walls constituting roll-outs, a latch operator stemmounted to be reciprocable to and from said knob shaft and operable byeither of said roll-outs, said having a head extending into saidcut-outs locking said shanks in assembled relation, a spring for holdingsaid stem with its head in said cut-outs against said roll-outs, a latchbolt, a rocker coupling said stem to said bolt for reversing directlonof movement, said head having an elongated keeper slot with a serrationextending along its inner wall, a lock dog mounted in said shanks foraxial movement and extending through one'knob for manual operation androtatable in the companion shank, said dog having a transverselyelongatedinner end mounted in a corresponding opening formed in theother shank and thereby restrained therein against rotation andprojectable into said slot to hold said stem against protraction, theinner end of said dog having a recess for coaction with said serrationto yieldably hold the dog within said head, said spring urging said steminto holding position with said dog, resilient means tending to retractsaid dog from said slot, said dog being releasable by oscillation of theknob through which it projects, and an oscillatable roll-out disposed insaid other shank and engageable with the head tract the latter, saidlast mentioned roll-out being operable through the door knob of saidother shank whereby to release said stem from said dog.

shaft having a tubular casing, independently oscillatable shanks nestedwithin one another and pivotally mounted in said tubular'casing, saidshanks having registerable cut-outs constituting roll-outs, a set-backguide casing extending through said tubular casing, a

mounted to be reciprocable in said set-back casing to and from said knobshaft and operable by either of said roll-outs, said operator stemhaving a head extending into said cut-outs and locking said shanks inassembled relation, a spring in said set-back casing for holding said.stein of said stem to pro- 14. A door latch comprising a divided knob intheir walls with its head in said cut-outs and yieldably a ainst saidroll-outs, a latch bolt, a rocker plvotall mounted in said casing andcoupling said stem to said bolt for reversing d1- 'rect1on of movement,said head having an elongated keeper slot with a serration extendingalon its inner wall, a lock dog mounted in said anks for axial movementand extending through one knob for manual operation and rotatable in thecompanion shank, said dog having a transversely elongated inner endbeing mounted in a corresponding opening formed in the other shank andthereby restrained therein a ainst rota-. tion and projectable into saids ot to hold said stem aglainst protraotion, the inner end of said dogaving a recess for coaotion with said serration to ieldably hold the dogwithin said head, sai spring urging said stem inm to holding positionwith said dog, resilient means tendlng to retract said dog from saidslot, said dog being releasable by oscillation of the knob through whichit projects, and an oscillatable roll-out displosed in said other 25shank and engageable wit the head of said stem to protract the latter,said last mentioned roll-out having a stem pivotally mounted in saidother shank and operable through the door knob of said other shank 30whereby to release said stem from said dog. In witness that I claim thefore oing I have hereunto subscribed my name t 's 12th day of January,1931.

EDWALL JAMES BAUME.

